Eulerian–Lagrangian simulations of plume-induced sheared granular beds under Martian conditions

Meet Patel, Jason Rabinovitch, Jesse Capecelatro

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

This work presents a numerical investigation of shear-induced erosion in low pressure, high-speed environments. Conditions are chosen to be relevant to erosion of Martian regolith by rocket exhaust plumes. A three-dimensional compressible Eulerian–Lagrangian framework is utilized to simulate turbulent channel flow over a bed of solid particles. Eigenvalue analysis of the momentum exchange terms reveals an added constraint to the simulation timestep in the particle bed at low Martian densities. Simulations are performed across a range of Shields and Galileo numbers. We show that despite the low concentration of suspended particles in the free stream, the large density ratio between Martian regolith and ambient gas Pp /P = O(105 ) results in strong two-way coupling and relaminarization of the background turbulence.

Original languageEnglish
Title of host publicationAIAA SciTech Forum 2022
DOIs
StatePublished - 2022
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022 - San Diego, United States
Duration: 3 Jan 20227 Jan 2022

Publication series

NameAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
Country/TerritoryUnited States
CitySan Diego
Period3/01/227/01/22

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